temperature control system LD-4W

Product Name

Ultra-low Temperature Freezer

Model

LD-4W

LD-6W

LD-8W

LD-12W

Temperature Range ℃

-80°C~ -30°C

Cooling Capacity

At -60°C

6kW

9kW

12kW

18kW

5160Kcal/h

7740Kcal/h

10320Kcal/h

15480Kcal/h

Cooling Capacity

At -75°C

4kW

6kW

8kW

12kW

3440Kcal/h

5160Kcal/h

6880Kcal/h

10320Kcal/h

Circulation Pump

6.6m³/h

2.5bar max

6.6m³/h

2.5bar max

9m³/h

2.5bar max

15m³/h

2.5bar max

Inlet & outlet connection size

DN-25 PN-10

DN-25 PN-10

DN-32 PN-10

DN-32 PN-10

Water-cooled type W (cooling water at 30℃)

10m³/h

14m³/h

20m³/h

25m³/h

Cold storage tank (optional)

200L

350L

500L

750L

Expansion tank (standard)

100L

175L

250L

350L

Compressor

Standard: Copeland
Optional: BOCK piston compressor

Operation Panel

7-inch color touch screen display, temperature curve record, data export to excel format.

Control System

Standard: Single-chip microcomputer controller; Stepping control;

Set temperature difference of refrigeration on & off.

Optional: SIEMENS S7-200PLC & Module

Closed
circulation system

The whole system is a full closed circulation, there is no oil mist at high temperature

and no water vapor at low temperature, pressure do not rise up when system is running.

The system will supplement oil automatically at low temperature.

Circulation pump

Standard: Direct type magnetic pump

Optional: Increase the pipeline magnetic pump pressure in the pipeline

Evaporator

Standard: Braze welding plate heat exchager (BPHE)

Optional: Stainless steel tube heat exchanger

Condenser

Shell and tube type water cooled condenser

Intermediate heat exchanger

KAORI Plate heat exchanger

Dry Filter

Emerson

Drying filter core

Emerson

Expansion tank

Emerson

FDF

Emerson

Oil separator

Emerson

Pressure protector

Emerson

Reservoir

Standard: RSP

Optional: Emerson

Sight glass

Standard: SANHUA            Optional: Danfoss

Refrigeration ball valve

Standard: SANHUA            Optional: Danfoss

Electric

Schneider AC contactor, Schneider intermediate relay

Refrigerant

R404A

Secondary refrigerant

Schneider AC contactor, Schneider intermediate relay

Safety protection

High pressure protect; Water supply cut-off protection; Over-current protection;

Leakage protection; Sequential and phase failure protection; High temperature protection;

Sensor Failure protection; Liquid low level protection etc. muti-safety protection.

Level Indicator

Adpot glass liquid level indication

Piping material

SUS304

Expansion tank material

SUS304

Case material

Steel channel + Square tube + Cold-rolled blanking plate  painting

Product size

205*145*175

205*145*175

205*145*175

235*145*175

Power

380V 50HZ

14kW max

380V 50HZ

18kW max

380V 50HZ

30kW max

380V 50HZ

43kW max

HP

15HP

25HP

35HP

50HP

dB

75DB

Within80dB

Weight

950kg

1100kg

1400kg

1800kg